Hi Alexandre, Thank you for the patch! Yet something to improve: [auto build test ERROR on lwn/docs-next] [also build test ERROR on linus/master v5.12-rc2 next-20210312] [cannot apply to soc/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Alexandre-Ghiti/Move-kernel-mapp... base: git://git.lwn.net/linux-2.6 docs-next config: riscv-randconfig-r013-20210312 (attached as .config) compiler: riscv32-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/9d81fd1724231d8cbb9d769b67dd13108... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Alexandre-Ghiti/Move-kernel-mapping-outside-the-linear-mapping/20210313-173049 git checkout 9d81fd1724231d8cbb9d769b67dd131080d22d2b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/riscv/mm/ptdump.c: In function 'ptdump_init': 376 | address_markers[MODULES_MAPPING_NR].start_address = MODULES_VADDR; | ^~~~~~~~~~~~~ arch/riscv/mm/ptdump.c:376:54: note: each undeclared identifier is reported only once for each function it appears in vim +/MODULES_VADDR +376 arch/riscv/mm/ptdump.c 356 357 static int ptdump_init(void) 358 { 359 unsigned int i, j; 360 361 #ifdef CONFIG_KASAN 362 address_markers[KASAN_SHADOW_START_NR].start_address = KASAN_SHADOW_START; 363 address_markers[KASAN_SHADOW_END_NR].start_address = KASAN_SHADOW_END; 364 #endif 365 address_markers[FIXMAP_START_NR].start_address = FIXADDR_START; 366 address_markers[FIXMAP_END_NR].start_address = FIXADDR_TOP; 367 address_markers[PCI_IO_START_NR].start_address = PCI_IO_START; 368 address_markers[PCI_IO_END_NR].start_address = PCI_IO_END; 369 #ifdef CONFIG_SPARSEMEM_VMEMMAP 370 address_markers[VMEMMAP_START_NR].start_address = VMEMMAP_START; 371 address_markers[VMEMMAP_END_NR].start_address = VMEMMAP_END; 372 #endif 373 address_markers[VMALLOC_START_NR].start_address = VMALLOC_START; 374 address_markers[VMALLOC_END_NR].start_address = VMALLOC_END; 375 address_markers[PAGE_OFFSET_NR].start_address = PAGE_OFFSET; 377 address_markers[KERNEL_MAPPING_NR].start_address = kernel_virt_addr; 378 379 kernel_ptd_info.base_addr = KERN_VIRT_START; 380 381 for (i = 0; i < ARRAY_SIZE(pg_level); i++) 382 for (j = 0; j < ARRAY_SIZE(pte_bits); j++) 383 pg_level[i].mask |= pte_bits[j].mask; 384 385 debugfs_create_file("kernel_page_tables", 0400, NULL, &kernel_ptd_info, 386 &ptdump_fops); 387 #ifdef CONFIG_EFI 388 if (efi_enabled(EFI_RUNTIME_SERVICES)) 389 debugfs_create_file("efi_page_tables", 0400, NULL, &efi_ptd_info, 390 &ptdump_fops); 391 #endif 392 393 return 0; 394 } 395 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org